Design and Validation of a Tripping-Eliciting Platform Based on Compliant Random Obstacles

Area of Science:

• Biomechanics
• Human movement science
• Robotics

Background:

• Understanding stumble phenomena is crucial for developing safety technologies.
• Existing methods for studying tripping lack realistic and controllable perturbations.
• At-risk populations require effective interventions against harmful effects of stumbles.

Purpose of the Study:

• To create a versatile platform for delivering realistic and unanticipated tripping perturbations.
• To enable controlled studies on the biomechanics of stumbling.
• To facilitate the development of technological solutions for fall prevention.

Main Methods:

• A modular tripping-eliciting system was designed using multiple compliant trip blocks.
• The system was validated through an experimental study involving 9 healthy subjects.
• Perturbation strength and timing were controlled to elicit realistic tripping events.

Main Results:

• The system successfully delivered 33 out of 34 planned perturbations.
• 31 perturbations effectively induced tripping events in subjects.
• Limited subject adaptation to perturbations was observed, consistent with literature.

Conclusions:

• The developed platform provides realistic trip perturbations while minimizing subject adaptation.
• The system's modularity and tunable parameters offer a novel approach to studying stumbling.
• This technology can be adapted for various applications in human movement analysis and safety research.